E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
An American plant, or rather genus of plants, named after Quassi, a negro.
Linnæus applied this name to a tree of Surinam in honour of a negro, Quassi, who employed its bark as a remedy for fever; and enjoyed such a reputation among the natives as to be almost worshipped by some,Lindley and Moore: Treatise of Botany, part ii. p. 947.)